FR2756886A1 - GUIDE RAIL ARRANGEMENT FOR LINKING TWO CONSTITUENT ELEMENTS - Google Patents

Abstract

Guide rail arrangement for the connection of two components, characterized in that the two rails (1, 2) limit, in the central longitudinal region of the arrangement, a housing (5) opened by means of a lateral recess ( 6) of one of the rails (1, 2) for a spring and / or damping element, to be inserted, causing a movement to return to the starting position as a result of the stored energy, areas with the rolling body and sliding bodies connecting to the housing (5), extending respectively into the end regions of the rails (1, 2).

Description

Description

  FIELD OF THE INVENTION The invention relates to a guide rail arrangement for the connection of two constituent elements which can slide mutually, with a lower rail, and an upper rail which is supported on it by means of rolling bodies, rails which are formed in the form of rectilinear profiled sheet metal elements and one of which partially surrounds the other, cavities being formed to review the

  rolling element and other sliding elements arranged in

be the rails.

  Background of the invention Such a guide rail arrangement can be used as a sliding device for a mass, which must be made to slide in a frame. For this, document DE-38 32 778 C2 indicates an arrangement in which the transmission of forces from the upper rail to the lower rail takes place by means of a roller and two steel balls, which are arranged between the rails. To prevent that

  elements of the device do not deform as a result of the

  those which intervene, thus giving sufficient rigidity

  health to a sliding seat system, the rail

  present in another embodiment of

  writes in this document to each terminal section a reinforcing element, which follows its cross-section on the lower rail and rests on it. With this device we have

  however, an additional construction cost. The document DE-

  42 41 369 Cl shows a guide rail arrangement, in

  which the upper rail does not rest on the lower rail

  laughing only by balls. In the lower rail is mounted a deflection roller for an elastic elastomer section which

  exerts a restoring force in the event of prestressing.

  A guide rail arrangement of the men-

  tioned at the beginning is known from document DE-41 33 509 Al and

  by the corresponding document DE-91 12 600 U1. In these docu-

  The sliding bodies have been produced in the form of rolls.

  They are made of a plastic material which has self-lubricating properties. In addition to lubrication these

  bodies serve at the same time when they are in a pre-

  constrained, deformed to prevent clicking of the two rails

which rest on each other.

  SUMMARY OF THE INVENTION The object of the invention is to provide a guide rail arrangement which provides a regular distribution of the load on its constituent elements, so as to reliably avoid their deformation and a depression of the bodies of

  rolling. In this way we are sure to have a possibility

  sliding bility without backtracking of one of the rails

compared to each other.

  This problem is solved according to the invention, thanks

  to the fact that the two rails limit, in the longitudinal zone

  central nale of the arrangement, an open housing by means of a lateral recess of one of the rails for an element to

  spring and / or damping, to be inserted, causing a slackening

  return to the starting position as a result of the energy

  stored, areas with rolling bodies and sliding bodies connecting to the housing, extending

  respectively in the terminal areas of the rails.

  In this way, a linear guide is produced with a spring and / or damping element, which forms a construction unit with the smallest space requirement.

  possible. Compression, tensile forces and

  these lateral ones can be transmitted by rolling bodies

  and sliding bodies. In the case of the use of a machine or an installation, the shocks which act on the machine in the longitudinal direction of the rails are no longer directly transmitted to earth. The new guide rail arrangement allows for absolutely smooth and smooth sliding with a corresponding sliding resistance. As a result of the optimal distribution, any sinking of the rolling bodies in the tracks is avoided.

  rolling so that it is possible to have the

  smooth smoothing over the entire life of the installation

  lation. The rolling bodies of an area can be

  rollers or balls. The use of a cylindrical body

  drique allows to have a high load transmission.

  Compared to balls, rollers have the advantage of having a higher bearing capacity. As sliding bodies, two parallel bars or two parallel rows of balls can be placed in an area. It is also possible to use two cou-

  ches extending parallel to a sliding material, for example a polymeric material. Such a material for sliding body can for example be sprayed on the upper rail or on the lower rail. As a variant, rolling bodies (balls) can be used for this zone.

  On the rails you can have as stops

  limitation for screw bearing bodies, with which

  the respective rail is removably attached to the adjacent component part. In addition, it is possible to form folded sheet metal legs on the upper rail as limiting stops for the rolling bodies. On the lower rail there can be a fixing part entering a housing (folded sheet metal tab or bolt) for the spring and / or damping element to be inserted. Thanks to the arrangement of the rolling bodies at the ends of the unit and thanks to the central arrangement of the

  spring and / or damping the linear guide according to the

  vention is able to receive high torques.

  It results from the cooperation between the cy-

  lindriques and profiled sheet economical production,

  another cost advantage being obtained by the use of sheet metal

  identical in cross section, which provides

be cost advantage.

  In the case of the guide rail arrangement according to the invention, it is therefore a linear guide with

  an integrated housing for a spring and / or damping element

  weaving, which can absorb forces in two directions, the stored energy, which is supplied to the element, creating a restoring force to the initial position. The use of such a linear guide is generally conceivable in the sector of machine construction for absorbing the

  shocks. It is also possible, in the case of such a guide

  linear dage to arrange one behind the other more

  several spring and / or damping units. Brief description of the drawings

  The invention will be described below in more detail.

  tail from an embodiment shown in the accompanying drawings in which: - Figure 1 shows a longitudinal section through a

  guide rail arrangement along line I-I in figure

  Figure 2, - Figure 2 shows a top view of the arrangement of

  guide rail with partial section along line II-

II of FIG. 4,

  - Figure 3 shows a cross section through the dis-

  guide rail position, along line III-III in Figure 1,

  - Figure 4 shows a cross section through the dis-

  guide rail position along line IV-IV of figure

gure 2 and

  - Figure 5 shows a cross section through a va-

  Guide rail arrangement, in which the lower rail and the upper rail are produced identically.

Detailed description of the drawings

  A guide rail device according to the invention

  tion consists of a lower rail 1 and an upper rail

  2, which are respectively constituted in the form of profi-

  sheet metal sheets of elongated shape. The lower rail 1 is surrounded

  partly re by the upper rail 2, so that a cavity is obtained, in which rollers 3 are arranged in the form of rolling bodies and other sliding bodies, by means of which the upper rail 2

  is supported on the lower rail 1. The rollers 3 are flush

  appeared in two groups, each group being in a

  final area of the arrangement of guide rails. In each

  none of these terminal areas the sliding bodies extend

  in pairs and parallel to both sides of the rollers 3.

  In the central area the arrangement of guide rails has a housing 5 for a spring or damping element to be inserted. This housing 8 is open towards the outside, owing to the fact that the upper rail 2 has a recess in the central zone 6. Inside the housing 5 there extends a fixing part 7 which starts from the lower rail. 5 laughing, and which can be made in the form of a tab, in sheet metal, folded or a bolt inserted and fixed on the lower rail 1. The sliding of the upper rail 2 relative to the lower rail 1 is limited by stops, on which the outer roller 3 of a group comes to rest respectively

  pebbles. These stops are formed in the direction of the housing.

  ment 5 in the form of legs, in sheet metal, folded from the top rail

  périeur 2. But we can also use screws 9 as stops

  for limiting the sliding movement, screws which pass-

  feels at the ends of rails 1 and 2 through bores

  rails and are screwed into the adjacent component part.

  In this way you can fix the lower rail 1 on a

  hicle and the top rail 2 on a vehicle seat, which

  must be arranged inside the vehicle so that

see slide.

  In the case of the embodiment shown

  tee in Figure 5 the bottom rail and the top rail are made in exactly the same way. In this case there is in fact no symmetrical construction for the introduction

  forces, but the use of a single form of sheet metal

cure a cost advantage.

  NOMENCLATURE OF NUMERICAL REFERENCES

  1 lower rail 2 upper rail 3 roller 4 sliding body housing 6 recess 7 fixing piece 8 sheet metal lug 9 screws

Claims (6)

R E V E N D I C A T IONS   1) Layout of guide rail for the connection of two component parts which can slide relative to each other, comprising a lower rail (1) and a top rail (2), which is supported on it by means of rolling bodies, these rails being formed in the form of profiled sheet metal parts, rectilinear, and one of which surrounds the other at least in part, cavities being formed to receive the rolling bodies and other sliding bodies (4) arranged between the rails (1, 2), characterized in that the two rails (1, 2) limit, in the central longitudinal region of the arrangement, a housing (5) opened by means of '' a lateral recess (6) of one of the rails (1, 2) for a spring and / or damping element, to be inserted, causing a movement to return to the starting position by   as a result of the stored energy, zones with the rolling bodies and the sliding bodies (4) connecting to the housing (5), extending respectively into the end zones of the rails (1, 2) .   ) Arrangement according to claim 1, characterized in that   the rolling bodies of an area are rollers (3).   3) Arrangement according to claim 1, characterized in that   the rolling bodies of an area are balls.   4) Arrangement according to claim 1, characterized in that   as sliding bodies (4) we have in a respective area two parallel bars.    ) Arrangement according to claim 1, characterized in that   as sliding bodies (4) we have in a respective area   two parallel rows of balls.   6) Arrangement according to claim 1, characterized in that   as sliding bodies (4) we have in a respective area   two layers, which extend in parallel, in one   slippery material, for example a polymeric material.   7) Arrangement according to claim 1, characterized in that on the rails (1, 2) there are provided as limiting stops for the rolling bodies of the screws (9), with which the respective rails (1, 2) are fixed on a constituent part neighbor, removably.   8) Arrangement according to claim 1, characterized in that   on the upper rail (2), limit stops are constituted   tation for the rolling bodies of the sheet metal legs (8), folded. 9) Arrangement according to claim 1, characterized in that on the lower rail (1) there is a fixing part (7), which enters the housing (5), (folded sheet metal leg or bolt) for the element with spring and / or damping to be inserted. 10) Arrangement according to claim 1, characterized in that the lower rail and the upper rail have the same cross section.